Quote of the moment:
There's no warning about cookies on this site because I don't use them. I would have no idea what to do with your information. Can you pawn it for drugs?
So, I made a handy chart for my pal Jesse Lindsay, comparing the appearance and habits of the European Black Rat (rattus rattus) and the Norwegian Brown Rat (rattus norvegicus) - so that he could determine how best to deal with the one living under his sink.
Perhaps it could help you, if you have a rat identification issue.